<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box{
            width: 100px;
            height: 100px;
            background-color: skyblue;
            animation: move 5s infinite;
        }
        /* 自定义动画、过程 */
        @keyframes move{
            0%{transform: translateX(0) translateY(0);;}
            25%{transform: translateX(500px) translateY(0);}
            50%{transform: translateX(500px) translateY(500px);}
            75%{transform: translateX(0) translateY(500px);}
        

    </style>
</head>
<body>
    <div class="box"></div>
</body>
</html>